VDB-265416 · CVE-2021-47380 · GCVE-0-2021-47380

Linux Kernel up to 5.14.9 devm_add_action_or_reset null pointer dereference

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5.5	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.14.9 and classified as critical. This affects the function devm_add_action_or_reset. The manipulation results in null pointer dereference. This vulnerability is identified as CVE-2021-47380. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.14.9. It has been classified as critical. Affected is the function devm_add_action_or_reset. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: HID: amd_sfh: Fix potential NULL pointer dereference devm_add_action_or_reset() can suddenly invoke amd_mp2_pci_remove() at registration that will cause NULL pointer dereference since corresponding data is not initialized yet. The patch moves initialization of data before devm_add_action_or_reset(). Found by Linux Driver Verification project (linuxtesting.org). [[email protected]: rebase]

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2021-47380. There are known technical details, but no exploit is available.

Upgrading to version 5.14.10 eliminates this vulnerability. Applying the patch 283e4bee701d/d46ef750ed58 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

Version

License

open-source

Website

Vendor: https://www.kernel.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.14.10
Patch: 283e4bee701d/d46ef750ed58

Timelineinfo

05/21/2024 🔍
05/21/2024 +0 days 🔍
12/23/2024 +216 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2021-47380 (🔍)
GCVE (CVE): GCVE-0-2021-47380
GCVE (VulDB): GCVE-100-265416

Entryinfo

Created: 05/21/2024 17:26
Updated: 12/23/2024 21:54
Changes: 05/21/2024 17:26 (56), 12/23/2024 21:54 (12)
Complete: 🔍
Cache ID: 216::103